Siphon for flush-tanks.



J. W. BERRY.

SIPHON POR FLUSH TANKS.

APPLICATION FILED PEB. 2, 1914.

Patented Feb. 16, 1915.

Attorneys.

Witnesses tl' t fi.

FFQ.

SIPHON FOR FLUSH-TANKS.

Specification of Letters Patent.

Patented Feb. 16, 19115.

Application filed February 2, 1914. Serial No. 816,078.

T0 all whom it may concern:

Be it known that I, JAMES W. BERRY, a citizen of the United States, residing at Iowa City, in the county of Johnson and State of Iowa, have invented a new and useful Siphon for Flush-Tanks, of which the following is a specilication.

The present invention appertains to a siphon for flush tanks, and aims to provide an apparatus of the nature indicated, which is particularly adapted for sewage systems, and the like.

It is the object of the present invention to provide a siphon of simple, compact and inexpensive construction, and possessing the fewest number of component parts possible, which shall be adapted for application within a flush tank, for intermittent automatic operation as the tank is continually illed with water or other iuid.

It is alseo the object of the present invention to provide a siphon of the nature indicated, which will be adapted for connection with a sewer or other conduit, Jor intermittently flushing the same.

A further object of the present invention is to provide a siphon for flush tanks, which will render unnecessary, the usual deep seal trap, disposed or embedded below the floor or bottom of the tank, the present siphon being adapted to be disposed upon the floor or bottom of the tank for direct connection with the sewer or conduit without the intervention of a deep seal trap between the sewer or conduit and the bottom or floor of the tank, whereby ready inspection of sewer is possible.

A still further object of the present invention is to provide an apparatus of the character specified, embodying a relief trap, which will relieve the main trap of the pressure as the water level rises within the tank, in order that the main trap will be brought quickly into full action, when the water level rises to a predetermined point, and whereby the rapid discharge of the water from the tank into the sewer or conduit will ensue.

With the foregoing` general objects outlined, and with other `objects in view, which will be apparent as the nature of the invention is better understood, the present invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention has been illustrated in its preferred embodiment in the accompanying drawings, wherein Figure l is a vertical central section of a flush tank illustrating the present improvements applied thereto, portions being broken away. Fig. 2 is a cross section of the siphon, taken on the line 2-*2 of Fig. 1.

ln the drawings, the numeral l designates the usual flush tank, which may be of any suitable cross sectional area or outline, according to the volume of water which is to be discharged at each operation of the siphon. The tank l, as is usual, is supplied with water by a supply pipe 2, which is normally open, when the apparatus is in operation, so that a continuous stream of water Hows into the tank l.

In carrying out the present invention, an annular channel 3 is seated on the bottom of the tank, the inner wall 4L of the channel having its lower end extended, as at 5, below the bottom of the channel, so as to pass through the bottom or ioor of the tank 1, to communicate with the end or a branch of a sewer 6, or other'conduit to be iiushed.

The channel 3 is relatively deep and is preferably in the form of a casting, the central opening of the channel, formed by the inner wall 4 thereof, communicating through the tank bottom and with the sewer or conduit 6, and also permitting ready access to be had to the sewer or conduit, Jfor purpose of inspection or otherwise. y

Within the bottom portion of the annular channel 3, are a plurality of radial webs 7, which connect the inner and outer walls 4: and S of the channel, respectively, and which are also integral with the bottom of the channel, the upper edges of the webs being \/-shaped, as seen in Fig. l.

A bell or dome 9 is disposed over the channel 3, and a depending sleeve or annular petticoat 10 is carried by the head or top of the bell 9 and enters the channel 3, so as to normally seat upon the webs 7.- Thus, the sleeve or vpetticoat 10. seating on the webs 7 will normally support the bell 9, the V-shaped upper edges ofjthe webs tending to cent'er the bell, or to place the same into concentric relation with the channel. p. The bell 9 is preferably provided with a sniff or vent aperture 9=L `at vone side and adjoining vits lower edge. The top or head of thebell is preferably provided with a hand hold 11' 12 being extended upwardly-through the top- 4or'head of the ybelland having the extension 13 passing back through the top or head of the belloutside of the sleeve 10 so as to communicate with the upperend of the outer limb ofthe main trap. Thatportion of the outer limb of the relief trap 12 above the top orhead of the bell 9 is provided with an upstanding branch 414 having a removable :cap 15, whereby when the cap is removed,the relief trap 12 .may be primed, as when the device is firststarted to operate, or when the 4relief 1trap is emptied .by evaporation. The

other arm or limb of .the relief trap. is' shorter in lengththan the inner arm or .limb

ofthe main trap, wherebyl the relief .trap will be discharged or opened, prior tothe siphonic action `through the main trap. As will be evident, the relief trap 12 will be carried by thebell. i

In operation, the channel 3 is normally filled with water, so as tofill the main trap, and the relief trap k12 is also filled with water. Now,as.the water flows into the tank 1 jfrom the supply `pipe 2, the ewater level vwillrise within the tank, and as the water level rises, the column of air between the .periphery Tor apron tof .the lbell 9 and fthe youter wallf8 of the channel or main trap will be brought under compression, thereby forc- 4ingthe water within the outer limbs of `the main and Vrelief traps downwardly or inwardly. Thus, the water will rise within 'the periphery .or skirt .of the bell, toward the upperedgeor end of the outer wall 8 of the channelorsmain trap. Thus, as the column of water "between theperiphery orv Iapron of `the ybell and "theouter wall l'of the channel or main trap reachesor approaches thelendr ofthe-ou'ter armor llimb ofthe main trap, the air being forced into the outer limbs of ythe main and relief traps, the relief trap is discharged, prior to the main trap, so as torelease'the .air above .the outer limb -of the main trap, through the relief- 4the water within the tank reaches a predetermined level, known as the discharge y line ,the siphonic action through the main ytrap will be 'set up,'whereby the water within the tank will be rapidly discharged into the sewer or conduit to flush 'the same. 4The water,=during the sipho'nic action, flows up# wardly within fthe periphery Yor rim of the bell 59, and .thence through the main trap and down y"through vthe vopening formed by the inner wall 4 of the channel or main trap to the sewer or conduit, in the directions of the larrows in fFig. 1, AAfter the tank has been emptied, due to the siphonic action, the vacuum will be broken, when rthe water level reaches the lower end of the bell 9, thus .permitting the air to ,enter the bell, yand consequently, .thewater between the .rim or periphery ofthe bell and the vouter wall 8 of the channel, will k'flow back into the bottom of the tank 1,.'th'e 'sniff or vent aperture Qapermitting the air to be admittedinto the bell. after the water level within the'bottom tank rises above the lower edge or end of the bell. The sniff aperture 9e,.-ho,wev'er, will not. seriously interfere with the siphonic action, inasmuch -as the area of the aperture 9at is vcomparatively small. After the bell 9 has been emptied, as intimated, the chan- .nel will remain filled with water, so 'as to illthe maintrap, which isr alsotrue of the relief trap, whereby it willbe apparent that yas the tank again becomes filled, `the forevgoingroperation.will be repeated. Thus, as the tank is `continually filled with water through the supplypipe 2, the siphon will beautomaticallyoperated at intermittent interval's, accordingV to the rapidityk at which the .tankisiilled The present siphon isk comparatively simple and does not embody any moving parts, .it being observed that the customary deepseal trap `below ,the flooror bottom of tl tank,.is not employed, which .is desira e. an'd directaccess is had tothe 's ewerorconduit, for purpose of inspection, or otherwise. The present kdevice is kparticularly adapted for use in a sewage systems, and the like, wherein :the flush water is to be discharged rapidly and in a large j volume.

Having thus described the invention, what is `claimed as nnew is Atank siphon including an annular channel, the .inner vwall of which` defines a central opening, a. .bell :mounted rover l lthe channel and having a depending sleeve entering the Thus, by Yremoving the bell, :ready same, and a U-shaped relief trap disposed In testimony that I claim the foregoing Within the central opening and having one as my own, I have hereto axed my signaarm extended upwardly through the top of ture in the presence of two Witnesses.

the bell and thence back through the top of JAMES W. BERRY. 5 the bell outside of the sleeve, that portion Witnesses:

of the relief trap above the top of the bell CARL E. NEUZIL,

having a removable closure. A. EDWARDS.

(Eopiel a! this patent may be obtained for live cents each, by addressing the Commissioner at Intent.

Washington, D. C. i 

